Tagged Questions
3
votes
1answer
91 views
Minimal $x$ for which $\phi(k) > n$ for all $k > x$
It's well-known that
$$
\liminf_n\frac{\varphi(n)\log\log n}{n}=e^{-\gamma}
$$
and there exists an effective version
$$
\varphi(n)>\frac {n}{e^\gamma\log\log n+\frac{3}{\log\log n}}
$$
valid for ...
